Questions about multiple monitors (Including projectors), how to set them up, troubleshooting the configuration, etc.

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Ubuntu 14.04 x64, PNY Nvidia GT730 (nvidia 340.96), dual monitor (DVI + VGA), VGA not detected

Fresh Ubuntu 14.04 64 bit install on desktop machine (dual boot with windows 7/64.) Video display adapter is PNY NVIDIA GT730 (PCI express). NVIDIA driver version is 340.96. NV-CONTROL version is 1....
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How to use 1k external monitor with 4k Dell Precision laptop

I have a 4k Dell Precision 5510 laptop, and I need to add a 1k external monitor to it, but I can't get the resolutions to get along. If I use @2x scaling, everything looks comically large (and ...
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0answers
5 views

Unity Dock Appears When Viewing Movies On Dual Screen System

I have a dual screen setup and I often will have a movie playing in VLC while surfing the Web on the other monitor. I place the movie in full-screen mode with no Unity Dock showing. However, when I ...
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1answer
48 views

VGA passthrough with QEMU and KVM - Nothing on screen

These last few days I've been trying to set up a windows virtual machine with VGA passthrough, using this guide as my main reference: https://www.pugetsystems.com/labs/articles/Multiheaded-NVIDIA-...
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0answers
32 views

Dual Monitor problems

Good Afternoon, I'm running Kubuntu 16.04, and on a Laptop with Nvidia Graphics, and a use an external display. The first time I connected the monitor, everything worked exactly as I wanted, and by ...
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0answers
8 views

Cannot configure external monitor

I'm trying to connect my laptop (Dell precision m7510) to an external monitor (Dell U2711), either using DisplayPort, or using the HDMI and to no avail. It appears as though the monitor is recognized,...
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1answer
19 views

ubuntu 16.04 doesnot detect second screen while screen is locked

I have Dell E6430 and connecting to it another screen using VGA cable , I installed Ubuntu 16.04 and whenever the screen is locked i must open the screen of the laptop to write the user name and ...
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0answers
10 views

Using dual monitor with STLab U-1200 usb 3-c to hdmi

I just migrated from Windows to Ubuntu. On windows, I was using dual 27" dell monitors, one connected through an HDMI and the second with a mini docking station usb 3-c to hdmi (stlab u-1200). On ...
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93 views

Second screen is black [Nvidia GTX 970]

From Graphics issues after installing Ubuntu 16.04 with NVIDIA graphics I can say that I've tried all the different drivers and even the nouveau won't work. Tried the purge and what follows in ...
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0answers
19 views

multiple 4k monitors on 16.04, issues

The problem is supporting two external 4k monitors from a notebook that has a built in 4k display. I can run either external 4k monitor from HDMI or mDP just fine on all desktops (Unity, Gnome, Gnome ...
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6answers
21k views

HDMI connection to external monitor causes laptop screen blackout in 14.04, nvidia graphics

I have had some serious issues with my external monitor and graphics display since installing Ubuntu 14.04, and no one else seems to have had the exact same problem so I figured it best to post here. ...
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3answers
4k views

After upgrading from13.10 to 14.04 screen on a laptop doesn't work but

First my laptop CPU/GPU is Intel Celeron N2815 (Bay Trail) and I am in dual boot with windows 8. I have upgraded from ubuntu 13.10 to 14.04 today through update manager. And after upgrading and after ...
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0answers
77 views

Dual monitors using different Nvidia GPUs not working

In my machine, I have two Nvidia graphics cards. I am running Ubuntu 14.0.4.2 x64. My primary card is a GTX650, and my secondary card is an 8600GT. I would like to have dual monitors, with one ...
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0answers
40 views

Second monitor doesn't awake after turning off

I have two monitors (not mirroring) which generally works as they should. However, sometimes (not always!), when I turn the monitors off, and the, turn them on again (typically for the lunch break), ...
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0answers
273 views

Xubuntu 16.04 - second monitor disabled after display sleep

My computer is set not to sleep or lock, but to blank the display after eg 10 mins. I have 2 monitors, which, prior to 16.04, worked as expected - the only noticeable thing was that, for whatever ...
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0answers
10 views

2nd monitor refresh rate not supported?

It's my first time with Linux, so I'm totally noob, but I wanna learn. I have Ubuntu 16.04 installed on my PC (along with Windows 10). My GPU is Radeon HD7850 (not sure what drivers I'm using - stock) ...
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1answer
31 views

How can I setup 3 monitors so that 2 & 3 are mirrored?

I have an nVidia GeForce GT 730 & am using the nVidia proprietary driver (361.42) on Ubuntu 16.04. I have 2 monitors & a projector. The first monitor maxes out at 1280x1024. The second monitor ...
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1answer
4k views

Dual Screen will only mirror after 12.04 upgrade

I have been using Ubuntu with a dual screen for years now, after upgrading to 12.04 LTS i cannot get my dual screen working properly Graphics: 01:00.0 VGA compatible controller: Advanced Micro ...
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1answer
93 views

Dual monitor started to flicker after upgrade to 16.04

I am running dual monitor setup (in mirror mode) on ubuntu. Right after upgrade to 16.04, I am experiencing issues with flickering (image on/off) on second screen (which is LGD LED TV), specifically ...
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0answers
70 views

Ubuntu 16.04 not detecting the second screen

Ubuntu 16.04 LTS cannot detect the second screen. I connect my PC with to two screens, one from the VGA and the other from DVI-D to VGA. The two screens show exactly the same picture. I tried to set ...
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2answers
552 views

How can I mirror one of the screens in a 3-monitor setup?

Is it possible to have 2 extended monitors and get the third being a mirror of one of the two extended? I'm pretty sure it's not possible through the interface but it may be possible through ...
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0answers
31 views

AMD Open Graphics Drivers Issue

I've had to to upgrade to 16.04 as 15.10 is no longer receiving updates however as AMD have not got their drivers ready yet for my graphics card, if they ever will, which is a Radeon 6850 OC, that ...
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0answers
12 views

How to lock the mouse pointer to one screen?

How can I lock the mouse pointer to one screen in a dual/multiple screen setup? Ideally, I would like to be able to move the pointer from one screen to another only while holding a key (like CTRL). I ...
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0answers
12 views

Does the usb 3.0 to vga (or dvi or hdmi or even displayport) function work with the new 4.4 kernel?

I've bought a laptop with a nvidia optimus graphics card and I don't want to activate the nvidia profile every time I want to use an external display. So I thought that a usb to vga adapter could be ...
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2answers
184 views

Ubuntu crashes when setting maximum resolution on external 4K monitor

Problem When attempting to set the resolution of my 4K external display to 3840x2160, the external display loses signal and moments later the entire system hangs. The display is connected to my XPS ...
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40 views

Support setting external monitors for Ubuntu 16.04

I have : Dell Laptop Inspiron 13 - 7000 Series (7353 modal ) Internal Video card : Intel® HD Graphics 520 (Skylake GT2) 2 Dell Monitors - UltraSharp U2414H Dell Docking Station 3.0 - D3100 Ubuntu ...
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0answers
31 views

Dual monitor not working

II am using ubuntu 16.04. I have 2 monitors 1 is connected with my nvidia 660ti(23in) through HDMI port and the other one is connected with built-in motherboard (VGA port). after starting ubuntu 2nd ...
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2answers
192 views

alt tab doesnt work for citrix xenapp in full screen

Alt+Tab doesn't work when Citrix is in full screen above question is related to 12.04. However, I am using 13.1 citrix xenapp on 14.04 kubuntu and suggestions dont work in this configuration. I ...
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1answer
53 views

How can I only make a specific screen sleep?

I use my laptop with multiscreen: laptop screen on one side, my TV displaying my media center (Kodi) on the other side. Problem, when I use my media center to watch a movie, the laptop screen never ...
2
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3answers
459 views

HP Elitebook 840 G3 Monitor Issue

I have a Elitebook 840 G3 with two external monitors exposed via a docking port. If I have one monitor turned on, everything works great, even removing the PC from the docking port and reconnecting. ...
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1answer
47 views

14.04, 3 screens in portrait, adjustment to be done each reboot

Every time I reboot my screens are like this, with a space in between them. My xorg.conf file does not get overwritten each time since the content is identical from one boot to the other (xorg.conf ...
2
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1answer
44 views

VGA splitter doesn't show two separate screens on ubuntu MATE 15.04

A few days ago I was lucky enough to obtain a free monitor and I decided to buy a VGA splitter to use it with my other screen. The splitter is an Aten VS92A, if it can be useful. The device works ...
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0answers
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Applications rendering at low resolution

Symptom: Applications are being rendered at 720x1280, but xrandr is showing 1440x2560. (Yes, I have my monitors oriented vertically) User Experience: I opened my laptop lid as it was running on ...
2
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2answers
5k views

Is this a dual monitor reset bug?

My two displays are: Intel GMA x4500 Laptop (1280x800 native resolution of the built-in display) External display (1920x1080) A few minutes after I login to my dual monitor setup, it gets reset to ...
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0answers
24 views

(Dual Screens) Mouse moves main display to side and shows second display on both main and second display

This is the most hardest thing to explain but here is a video of my problem: https://drive.google.com/file/d/0B0TIGQnxlWUpamlGaG5KLXRkVkE/view This has been bugging my ever since I when from Windows ...
3
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2answers
7k views

Turn off laptop display and have monitor

My laptop display has stopped working and is unfixable! Anyway, I got a full HD monitor and plugged that into the HDMI port of the laptop. I have changed the power settings so that I can close the ...
0
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1answer
31 views

Can't stop mirroring in dual monitor setup

I am running Ubuntu 14.04.3 64-bit, and have two Dell 17" monitors connected at a single VGA port. Both monitors are on, and mirror the same display. I am not able to detect the second monitor, when ...
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2answers
6k views

Display settings problems with Ubuntu 14.04 LTS

For whatever reason (this was working correctly on Ubuntu 12.04 LTS) when I try to set my displays on top of each other in the settings, it won't allow to place them on top of each other. When I ...
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4answers
13k views

Open new windows on main screen in KDE two-screen setup

I am using KDE (with Kwin) on two screens. Often when I run a new application the new window shows on the second screen eventhough the mouse as well as the active window is on the main screen. How can ...
7
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2answers
208 views

Cannot login after suspend with multiple monitors

Since I attached an external monitor to my laptop I'm no longer able to login when resuming from suspend. LightDM appears on both screens and shows my name in the login box, but the password field is ...
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1answer
454 views

External monitor is disabled after resume (only on 15.04)

I recently installed ubuntu 15.04 and most things just work out of the box, awesome! But there is on annoying thing: I have an external screen connected to my machine (T450s, via docking station) and ...
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0answers
24 views

How to configure xrandr when USB device is present

My laptop is connected to a Dell D3100 hub (via USB) which has video outputs - one of which is connected to an external monitor. However, that external monitor won't work unless I run sudo xrandr --...
0
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1answer
22 views

Cannot span a window across monitors when changed to portrait orientation

My previous setup was with 3 monitors in landscape 1280x1024. With that I was able to full screen a window over the 3 monitors and to move windows freely between screens. I've changed my screens to ...
0
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0answers
21 views

multiple session multiple monitor one keyboard question

I am having a hard time with a automated multi-session setup. The situation: I have a full Ubuntu 16.04 computer with a VGA monitor that runs perfectly. I would like to plug in an HDMI Flatscreen to ...
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1answer
6k views

Gnome: Video drivers on Dell XPS 9550 with 4K UHD screen

This laptop has an i7 processor and a discrete Nvidia GTX 960M card. I'm trying to run Gnome Shell. Has anyone got this working really well? And if so, how? My research/trials on Ubuntu Gnome 16.04, ...
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1answer
166 views

How to make ubuntu remember a windows position and size? (2 Monitors)

Hi everyone so I decided to change to ubuntu 14.04, although I've had some problems (most of which I was able to fix after researching), while I know that linux isn't windows, I want it to save window'...
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1answer
5k views

how do to install the display drivers for a displaylink usb monitor on 13.04?

How do I install the display drivers for a displaylink usb monitor? The monitor connected with the displaylink device has the following messages on the display: [ 10.723468] usb 3-1.1: device ...
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0answers
45 views

HDMI1 is disconnected

I'm trying to get a secondary monitor working with my laptop. I'm running Ubuntu 16.04 LTS. I have Windows 10 installed on the same laptop and it works in Windows 10. Currently xrandr -q outputs: ...
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0answers
22 views

How to make ubuntu recognize an external screen when laptop is docked during boot

Consider the following scenario: I connect my Thinkpad (with optimus) to my docking station Boot the laptop Than I want that ubuntu recognizes that the laptop is docked and that an external ...
0
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1answer
40 views

Mouse pointer missing after suspend / Lenovo X200 / Ultrabase / 2 monitors / Displays configuration issue?

since this problem seems to be recurring throughout distros and versions, I looked it up in most boards and of course [...] <- spare rambling about Google skills here. This did not solve it so far. ...